Example usage for java.util Set isEmpty

Introduction

In this page you can find the example usage for java.util Set isEmpty.

Prototype

boolean isEmpty();

Source Link

Document

Returns true if this set contains no elements.

Usage

From source file:Main.java

protected static Set intersectEmail(Set permitted, String email) {
    String _sub = email.substring(email.indexOf('@') + 1);

    if (permitted.isEmpty()) {
        permitted.add(_sub);//ww w  . j  a  v a2  s .co m

        return permitted;
    } else {
        Set intersect = new HashSet();

        Iterator _iter = permitted.iterator();
        while (_iter.hasNext()) {
            String _permitted = (String) _iter.next();

            if (_sub.endsWith(_permitted)) {
                intersect.add(_sub);
            } else if (_permitted.endsWith(_sub)) {
                intersect.add(_permitted);
            }
        }

        return intersect;
    }
}

From source file:com.google.mr4c.config.ConfigUtils.java

public static String applyProperties(String template, Properties props, boolean checkAll) {
    Properties trimmed = CollectionUtils.toTrimmedProperties(props);
    String result = StrSubstitutor.replace(template, trimmed);
    if (checkAll) {
        Set<String> missing = extractVariables(result);
        if (!missing.isEmpty()) {
            throw new IllegalStateException("No values found for parameters [" + missing + "]");
        }/*from  w  ww  .  j a  v a2s  .  c o m*/
    }
    return result;
}

From source file:Main.java

protected static Set unionEmail(Set excluded, String email) {
    String _sub = email.substring(email.indexOf('@') + 1);

    if (excluded.isEmpty()) {
        excluded.add(_sub);//  w w  w.j av  a 2  s  . c  om
        return excluded;
    } else {
        Set intersect = new HashSet();

        Iterator _iter = excluded.iterator();
        while (_iter.hasNext()) {
            String _excluded = (String) _iter.next();

            if (_sub.endsWith(_excluded)) {
                intersect.add(_excluded);
            } else if (_excluded.endsWith(_sub)) {
                intersect.add(_sub);
            } else {
                intersect.add(_excluded);
                intersect.add(_sub);
            }
        }

        return intersect;
    }
}

From source file:br.usp.poli.lta.cereda.aa.utils.SetOperations.java

/**
 * Calcula o produto cartesiano de um vetor de conjuntos.
 * @param sets Vetor de conjuntos.//  ww w.j a v  a2 s . c  om
 * @return Produto cartesiano do vetor de conjuntos.
 */
public static Set<List<Object>> cartesianProduct(Set<?>... sets) {

    // deve haver mais do que um conjunto
    Validate.isTrue(sets.length > 1,
            "No  possvel calcular o produto cartesiano " + "de apenas um conjunto.");

    // nenhum conjunto pode ser vazio
    for (Set<?> set : sets) {
        Validate.isTrue(!set.isEmpty(),
                "No  possvel calcular o produto cartesiano " + "quando um dos conjuntos  vazio.");
    }

    // calcula o produto cartesiano
    Set<List<Object>> elements = fetchElements(0, sets);

    // o retorno da funo gera listas com elementos em ordem
    // reversa, portanto,  necessrio inverter os elementos das
    // listas obtidas
    Set<List<Object>> result = new HashSet<>();
    for (List<Object> list : elements) {
        Collections.reverse(list);
        result.add(list);
    }

    return result;
}

From source file:Main.java

/**
 * set convert to byte[]/*from w  w  w.j a  v  a  2  s. c  om*/
 */
public static byte[] setConvertToByte(Set<String> values, String separate) {
    if (values == null) {
        return null;
    }
    if (values.isEmpty()) {
        return new byte[0];
    }
    String sp = TextUtils.isEmpty(separate) ? COMMA : separate;
    StringBuilder sb = new StringBuilder(64);
    int _size = values.size() - 1;
    int count = 0;
    for (String value : values) {
        sb.append(value);
        if (count != _size) {
            sb.append(sp);
        }
        count++;
    }
    return sb.toString().getBytes();
}

From source file:Main.java

/**
 * set convert to string//from  w w w  .  j a  v a  2 s  . c o m
 */
public static String setConvertToString(Set<String> values, String separate) {
    if (values == null) {
        return null;
    }
    if (values.isEmpty()) {
        return "";
    }
    String sp = TextUtils.isEmpty(separate) ? COMMA : separate;
    StringBuilder sb = new StringBuilder(64);
    int _size = values.size() - 1;
    int count = 0;
    for (String value : values) {
        sb.append(value);
        if (count != _size) {
            sb.append(sp);
        }
        count++;
    }
    return sb.toString();
}

From source file:com.enonic.cms.core.search.builder.ContentIndexDataFieldValueSetFactory.java

private static void addStringFieldValue(ContentIndexDataElement element,
        final Set<ContentIndexDataFieldAndValue> set) {
    final Set<String> elementStringValues = element.getStringValues();

    if (elementStringValues != null && !elementStringValues.isEmpty()) {
        set.add(new ContentIndexDataFieldAndValue(element.getFieldBaseName(), elementStringValues));
    }/*from  w ww .j a va 2s .co  m*/
}

From source file:com.sonicle.webtop.core.app.util.ClassHelper.java

public static Annotation getClassAnnotation(Class clazz, Class annotationClass) {
    if (clazz == null)
        return null;
    Set<Annotation> annotations = getClassAnnotations(clazz, annotationClass);
    return annotations.isEmpty() ? null : annotations.iterator().next();
}

From source file:Main.java

public static <T> boolean hasCycle(Collection<T> vertices, Function<T, Collection<T>> neighborExtractor) {
    Map<T, Collection<T>> parents = vertices.stream().collect(toMap(identity(), v -> new ArrayList<T>()));
    vertices.forEach(/*from w  w  w. j a  v a 2  s . c  om*/
            v -> nullSafeCollection(neighborExtractor.apply(v)).forEach(child -> parents.get(child).add(v)));

    Set<T> roots = vertices.stream().filter(v -> parents.get(v).isEmpty()).collect(Collectors.toSet());

    while (!roots.isEmpty()) {
        T root = roots.iterator().next();
        roots.remove(root);
        parents.remove(root);

        nullSafeCollection(neighborExtractor.apply(root)).forEach(child -> {
            parents.get(child).remove(root);
            if (parents.get(child).isEmpty()) {
                roots.add(child);
            }
        });

    }

    return !parents.isEmpty();
}

From source file:com.enonic.cms.core.search.builder.ContentIndexDataFieldValueSetFactory.java

private static void addNumericFieldValue(ContentIndexDataElement element,
        final Set<ContentIndexDataFieldAndValue> contentIndexDataFieldAndValues) {
    final Set<Double> elementNumericValues = element.getNumericValues();

    if (elementNumericValues != null && !elementNumericValues.isEmpty()) {
        contentIndexDataFieldAndValues.add(new ContentIndexDataFieldAndValue(
                element.getFieldBaseName() + INDEX_FIELD_TYPE_SEPARATOR + NUMBER_FIELD_POSTFIX,
                elementNumericValues));//from  w w w . ja  va2 s.co  m
    }
}